simple probability question

[Omegachi]

a test consist of 100 questions, and each questions have 6 multiple choice answers, and each question only has 1 correct answer. what is score is a student most likely to get if he randomly choose the answers.

i dunno... i got 60?

 

[kpunc]

Originally posted by: Omegachi
a test consist of 100 questions, and each questions have 6 multiple choice answers, and each question only has 1 correct answer. what is score is a student most likely to get if he randomly choose the answers.

i dunno... i got 60?

are you mentally challenged?

 

[SilentZero]

Originally posted by: kpunc

Originally posted by: Omegachi
a test consist of 100 questions, and each questions have 6 multiple choice answers, and each question only has 1 correct answer. what is score is a student most likely to get if he randomly choose the answers.

i dunno... i got 60?

are you mentally challenged?

ROFL

 

[Bv3]

103 questions will be right

 

[Omegachi]

hmm..

 

[Omegachi]

oh god i am an idiot.... i was using combinational analysis...

 

[Koenigsegg]

Imagine if there were 6 questions, how many would you project he'd get right?

Imagine now if there were 12. Then 18. Then apply what you used for those for 100..

 

[Random Variable]

The expected value of a binomial distribution is n*p.

 

[upsciLLion]

Originally posted by: Random Variable
The expected value of a binomial distribution is n*p.

What he said.

 

[stan394]

16 right?

 

[Koenigsegg]

Originally posted by: upsciLLion

Originally posted by: Random Variable
The expected value of a binomial distribution is n*p.

What he said.

If the op can't get the problem off the bat, I don't think that would make any sense to him..

 

[x04d DaY]

Originally posted by: stan394
16 right?

That's what I got. Makes sense to me.

 

[Random Variable]

Originally posted by: Koenigsegg

Originally posted by: upsciLLion

Originally posted by: Random Variable
The expected value of a binomial distribution is n*p.

What he said.

If the op can't get the problem off the bat, I don't think that would make any sense to him..

n=100
p=(1/6)

E(x)=np=16.666...

 

[TuxDave]

Originally posted by: Omegachi
oh god i am an idiot.... i was using combinational analysis...

Suuuure you were...